package io;

import javax.jws.soap.SOAPBinding;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("111.jpg");
        FileOutputStream fos = new FileOutputStream("");

        long start = System.currentTimeMillis();
        byte[] data = new byte[1024*10];//10kb
        int len;//记录每次读取的实际字节数
        while ((len=fis.read(data))!=-1){//每次读取10kb并判断是否读取到了末尾
            //将字节数组byte从下标0开始连续len个字节写出(做到都多少就写多少)
            fos.write(data,0,len);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕!耗时:"+(end-start)+"ms");





        /*long start = System.currentTimeMillis();
        byte[] data = new byte[1024*10];//10kb
        while (fis.read(data)!=-1){//每次读取10kb并判断是否读取到了末尾
            fos.write(data);//一次写入10kb
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕!耗时:"+(end-start)+"ms");*/
        fis.close();
        fos.close();
    }
}
